Keyboard is the most common input device. It is one of the most important parts of a computer which is used to enter commands, text, numerical data and other types of data by pressing the keys on the keyboard. A user talks with a computer through input devices such as keyboard. Input devices are used to enter data to a computer. Keyboards are an indispensable accessory for a computer. One of the most basic input devices, computer keyboards are used in navigation, execution of processes, programming and several other purposes. Several software based application directly derive their existence from a keyboard. For instance, social networking websites, programming languages, navigation over the computer menus etc. utilize a computer keyboard. Even this very article wouldn’t have been possible without a keyboard. A normal computer keyboard is composed of around 110 keys. Although on the basis of key arrangements there are four major keyboard layouts being used worldwide, QWERTY, AZERTY, QW...
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